All serious hillwalkers, with a lifetime in front of them, will wish to traverse the so called Sperrins Ridge from one end to the other on a June day and I wish them the best of luck. But as an Arderins purist I must avoid such energy sapping distractions. The notion that I would feel any need to visit, for example, Learmount Mountain South Top (which lies between the Mullaghs and Dart/Sawel) is simply beyond me. It stands at 492 metres but it might as well be 4.92 metres because it is not an Arderin. What a juicy pair are Dart n Sawel. 619m and 678m. They lie between two north/south roads - to their west is the road from Cranagh, to their east is the road from Sperrin. So what's the most energy efficient route? The answer is that the col on the Cranagh road lies at a height of just under 450 m while the the col on the Sperrin road lies at circa 320 m. That's a differential of almost 130 m begging you to start at H58966 96928. Secondly, it is easier to contour a smaller mountain en route to or from a bigger mountain, than to contour a bigger mountain en route to or from a smaller mountain! Having said that I didn't make a great job of the final 2 of my 6 Western Sperrin Arderins. Parking was no trouble: there's room for a few cars. But I was getting tired and it lashed rain, and by the time I was contouring Dart on the route home, I made heavy weather of it, rising and falling over craggy spurs instead of taking a lower route. And contouring exacts a price too. Generally, my joint pains are limited to my knees and hips. Contouring plays hell on one's ankles. Finally, the route I have described is significantly shorter than the alternative route from the eastern side. So there it is: If you want a life changing experience, walk the Sperrins ridge in one giant step. If you want six plum Arderins on a late October day, follow my cunning plan!